AWS_ACCESS_KEY_ID

AWS_SECRET_ACCESS_KEY

AWS_DEFAULT_REGION

INTERNAL_IP

IP_PORT

SWARM_TOKEN

BUCKET

DIGITAL_OCEAN_TOKEN

Gain insights into Docker architecture, images, and containers. Delve into Docker Compose, JS integration, and production readiness. Master deploying, clustering, and scaling Rails apps using Docker tools.

tarball.tar.gz

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Cloud

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This course is your field manual for building Rails applications with Docker. 

To kick things off, you’ll start by learning the basics of Docker like architecture, images, and containers. You will then be introduced to Docker Compose and use it to build up to a multiservice application with Redis.

You will then work to get your Dockerized setup to play nice with JavaScript, using both the standard asset pipeline and webpacker, Rails’ newest approach for integrating modern JavaScript front ends.

Lastly, you will learn how to prepare your Rails app for production. Once ready, using Docker’s own tools, you will provision machines, create a cluster, deploy the app, and scale the app’s resources to meet its changing needs.

By the end of the course, you will be able to confidently use Docker in any of your further projects.

Docker for Rails Developers

We now have a better understanding of where container orchestrators
fit in but there is still a choice to be made if you are considering deploying containers
to the cloud. 

You can either manage things at the infrastructure level and set
up the orchestrator yourself or you can use a container platform that handles
the underlying infrastructure and provides a preinstalled orchestrator ready
for you to deploy and scale your containers.

# IaaS 

**Infrastructure as a Service (IaaS)** platforms are bare-bones offerings. They give you all the low-level building blocks to create the environment for your applications to run. 

As you would expect, this gives you the most flexibility and customization in terms of tailoring your environment for your own needs. However, you have to do the work of provisioning your instances, configuring them, and installing your orchestration layer.


# CaaS
**Containers as a Service (CaaS)** platforms are the closest thing to <a href="https://www.heroku.com/"> Heroku </a> in a containerized world. They let you focus on your app and worry less about the infrastructure it runs on. For many, this is a popular option to get started. It is fast to get something up and running, and you offload a lot of the responsibilities (including many security considerations) to the platform. 

However, this comes at the price of less flexibility and customization—you are
limited by the capabilities exposed by the platform. The choice is not as discrete as it sounds. Even across different CaaS platforms, you will find that more or less work is done for you.

Next, we will look at some options around tools for provisioning IaaS infrastructure, were you to go down that route, before taking a brief tour of the big players in the CaaS space.

Know about the choices you have when deploying containers to the cloud.

IaaS vs. CaaS

Introduction

A Brave New World

Running a Rails App in a Container

Fine-Tuning Our Rails Image

Describing Our App Declaratively with Docker Compose

Beyond the App: Adding Redis

Docker for Rails Developer—Exam 1

Adding a Database: Postgres

Playing Nice with JavaScript

Testing in a Dockerized Environment

Advanced Gem Management

Some Minor Irritations

Docker for Rails Developer—Exam 2

The Production Landscape

Preparing for Production

A Production-Like Playground

Deploying to the Cloud

Docker for Rails Developer - Exam 3

Closing Thoughts and Next Steps

APPENDIX

IaaS vs. CaaS

Options to deploy on cloud